I agree that questions tagged [tag:activation] should be retagged appropriately as it is ambiguous and redundant. Questions about activating software other than Windows should get their own tag as you've suggested.

Most of the questions under [tag:activation] are about Windows activation, so we should look at all of the questions under this tag and retag the questions about activating other software to [tag:software-activation]. Afterwards, the tag [tag:activation] can be merged into [tag:windows-activation]. As part of this process, the tag wiki excerpt for [tag:windows-activation] can be edited to direct users to tag other software activation questions [tag:software-activation], so that confusion can be avoided.

The hyperlink activation question has nothing to do with any of this, so I've removed the [tag:activation] tag from the question.

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## Update
All of the non-Windows activation questions under [tag:activation] have been retagged accordingly, and I've proposed a tag wiki for [tag:software-activation]. [tag:activation] can now be merged into [tag:windows-activation].